HP 49G Pocket Manual page 80

Name
Σ –
Returns a vector of m real numbers (or one number x if
m = 1) corresponding to the coordinate values of the last
data point entered by Σ+ into the current statistics matrix.
Σ+
Adds one or more data points to the current statistics
matrix (reserved variable Σ DAT ).
∫
Integrates an integrand from lower limit to upper limit with
respect to a specified variable of integration.*
Description Access Inputs
N
N
lower limit upper limit integrand
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* = function
Outputs
→ x
x →
→ ' symb
'
integral
' name '